Ask HN: A 'template' 'CopyEditor' site,to recommend writing improvements?

If writers commonly misuse a term, it would flag the term, explain, and suggest alternatives. To the user it would function like Grammarly, but behind the scenes, it's a template: a (server-side?) file customizes it for detecting common writing mistakes that occur in the particular subject area. It would then be made available online for writers to use.

The customization would be a file that maps [problematic phrase] to [better phrase]. The site's users would submit a few paragraphs, and it would mark the changes it would recommend making.